i just find it odd that the gal and sov arent in the bridge list - they are stock; if nothing else, shouldnt they at least be in the list? what would prevent them from being there?
Foundation removed that "static" aspect of them, they too are BridgeDef's (take a look in StaticDefs.py at the bottom). So they are also dynamic now. And since they are dynamic, they can be removed.
Why I wouldn't know.
Oh hang on.
You do have the top mutator on do you? Since most (apparently) bridges are assinged the to Stock mutator. And (I just looked) the NX Bridge is assigned to the QuickBattle mutator (Extra Ships and Mods).
So, check if atleast the top 3 mutators are on.
The reason the initial bridge loads, is because Foundation defines a GetBridge function for mutators, and KM overrides this with his own implementation of it (the zzzShipReplacement.py anyone?). This mechanism uses the direct bridge file (as in scripts/Bridges) so it loads.
PS. I should have rewritten most of this as I rememberd stuff.
[EDIT] No, not the PS.
To get back to the topic title, the Sovereign bridge is the most heavy bridge in existance.
I hardly play it, and I seriously consider creating a confirmation message box for my personal install.
If I want to play another bridge afterwards, it's easier, faster, cleaner (though I hope not) to just quit BC and restart it.